Concepedia

P. S. Hammes

PS

32

Publications

1.2K

Citations

18

H-Index

1973

Active since

Affiliations

University of Pretoria(Current)

Department of Research and Specialist Services

University of Zululand

University of Zimbabwe

Ethiopian Institute of Agricultural Research

P. S. Hammes is an author at University of Pretoria specializing in agricultural economics, engineering, and botany.

Top concepts

Publications per year

1973–2011

32

Publications

32

Growth and productivity of potato as influenced by cultivar and reproductive growth

T. Tekalign, P. S. Hammes · Scientia Horticulturae · 2005 · 133 citations

, , +5

Effects of Farmyard Manure and Inorganic Fertilizers on Sorghum Growth, Yield, and Nitrogen Use in a Semi-Arid Area of Ethiopia

Wondimu Bayu, N.F.G. Rethman, P. S. Hammes et al. · Journal of Plant Nutrition · 2006 · 127 citations

, , +19

Differences in salinity tolerance for growth and water‐use efficiency in some amaranth <i>(Amaranthus</i> spp.) genotypes

E. N. Omamt, P. S. Hammes, P.J. Robbertse · New Zealand Journal of Crop and Horticultural Science · 2006 · 125 citations

The origin and structure of adventitious roots in sweet potato ( <i>Ipomoea batatas</i> )

Terefe Belehu, P. S. Hammes, P.J. Robbertse · Australian Journal of Botany · 2004 · 75 citations

Control mechanisms in the tuberization process

P. S. Hammes, Philip Nel · Potato Research · 1975 · 62 citations

, , +7

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